Product Description Phentolamine mesilate Other Details Molecular Formula: C18H23N3O4S Molecular Weight: 377.46 CAS Number: 65-28-1 Minimum Purity: >98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25mg Leadtime:20 Days Sizes 2: 100mg Leadtime:20 Days Sizes 3: 0 Leadtime:0